Pull request: 4836-revert-dhcp-upd

Updates #4836.

Squashed commit of the following:

commit 6fe1721d44be1c23e524d477e28b5f7cc5dd2dc6
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Mon Aug 15 17:48:41 2022 +0300

    dhcpd: reverd mod upd

internal/dhcpd/v4_test.go

@@ -12,9 +12,11 @@ import (
 	"github.com/AdguardTeam/golibs/stringutil"
 	"github.com/AdguardTeam/golibs/testutil"
 	"github.com/insomniacslk/dhcp/dhcpv4"
-	"github.com/mdlayher/packet"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+
+	//lint:ignore SA1019 See the TODO in go.mod.
+	"github.com/mdlayher/raw"
 )
 
 var (
@@ -554,7 +556,7 @@ func TestV4Server_Send(t *testing.T) {
 		req:  &dhcpv4.DHCPv4{ClientHWAddr: knownMAC},
 		resp: &dhcpv4.DHCPv4{YourIPAddr: knownIP},
 		want: &dhcpUnicastAddr{
-			Addr:   packet.Addr{HardwareAddr: knownMAC},
+			Addr:   raw.Addr{HardwareAddr: knownMAC},
 			yiaddr: knownIP,
 		},
 	}, {